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Exchange Anisotropy in Nanocasted Co3O4 Nanowires

Salabaş, Elena Lorena ; Rumplecker, Anja ; Kleitz, Freddy ; Radu, Florin ; Schüth, Ferdi

Nano letters, 2006-12, Vol.6 (12), p.2977-2981 [Periódico revisado por pares]

Washington, DC: American Chemical Society

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Título:
Exchange Anisotropy in Nanocasted Co3O4 Nanowires
Autor: Salabaş, Elena Lorena ; Rumplecker, Anja ; Kleitz, Freddy ; Radu, Florin ; Schüth, Ferdi
Assuntos: Condensed matter: structure, mechanical and thermal properties ; Cross-disciplinary physics: materials science; rheology ; Exact sciences and technology ; Materials science ; Nanoscale materials and structures: fabrication and characterization ; Other topics in nanoscale materials and structures ; Physics ; Quantum wires ; Single-crystal and powder diffraction ; Structure of solids and liquids; crystallography ; X-ray diffraction and scattering
É parte de: Nano letters, 2006-12, Vol.6 (12), p.2977-2981
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Antiferromagnetic Co3O4 nanowires with an average diameter of about 8 nm have been synthesized by using the nanocasting route. The nanowires were characterized by powder X-ray diffraction, transmission electron microscopy, and a superconducting quantum interference device magnetometer. The magnetic measurements show a unidirectional exchange anisotropy accompanied by an enhancement of the field-cooled coercivity at low temperature. These effects suggest the presence of an exchange interaction between the antiferromagnetic core and the surface spins. A strong dependence of the exchange field on the magnitude of the cooling field and a training effect have been observed. The dependence of exchange bias field on temperature reveals the important role played by the antiferromagnetic core in the exchange coupling.
Editor: Washington, DC: American Chemical Society
Idioma: Inglês

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Exchange Anisotropy in Nanocasted Co3O4 Nanowires

Salabaş, Elena Lorena ; Rumplecker, Anja ; Kleitz, Freddy ; Radu, Florin ; Schüth, Ferdi

Washington, DC: American Chemical Society

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